add .gitignore

msext/Class/Common/ASIHttpRequest/ASIDataCompressor.h

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+//
+//  ASIDataCompressor.h
+//  Part of ASIHTTPRequest -> http://allseeing-i.com/ASIHTTPRequest
+//
+//  Created by Ben Copsey on 17/08/2010.
+//  Copyright 2010 All-Seeing Interactive. All rights reserved.
+//
+
+// This is a helper class used by ASIHTTPRequest to handle deflating (compressing) data in memory and on disk
+// You may also find it helpful if you need to deflate data and files yourself - see the class methods below
+// Most of the zlib stuff is based on the sample code by Mark Adler available at http://zlib.net
+
+#import <Foundation/Foundation.h>
+#import <zlib.h>
+
+@interface ASIDataCompressor : NSObject {
+	BOOL streamReady;
+	z_stream zStream;
+}
+
+// Convenience constructor will call setupStream for you
++ (id)compressor;
+
+// Compress the passed chunk of data
+// Passing YES for shouldFinish will finalize the deflated data - you must pass YES when you are on the last chunk of data
+- (NSData *)compressBytes:(Bytef *)bytes length:(NSUInteger)length error:(NSError **)err shouldFinish:(BOOL)shouldFinish;
+
+// Convenience method - pass it some data, and you'll get deflated data back
++ (NSData *)compressData:(NSData*)uncompressedData error:(NSError **)err;
+
+// Convenience method - pass it a file containing the data to compress in sourcePath, and it will write deflated data to destinationPath
++ (BOOL)compressDataFromFile:(NSString *)sourcePath toFile:(NSString *)destinationPath error:(NSError **)err;
+
+// Sets up zlib to handle the inflating. You only need to call this yourself if you aren't using the convenience constructor 'compressor'
+- (NSError *)setupStream;
+
+// Tells zlib to clean up. You need to call this if you need to cancel deflating part way through
+// If deflating finishes or fails, this method will be called automatically
+- (NSError *)closeStream;
+
+@property (assign, readonly) BOOL streamReady;
+@end